Lock



W. R. WAY

Sept. 6, 1932.

LOCK

Filed Deb. 30. 1927 2 Sheets-Sheet l Sept. 6, 1932. w R 1,876,115

' LOCK Filed Dec. 30. 1927 2 Sheets-Sheet 2 a .8. P Q \6 Egg-7 g l 8 Q6 if) Fig.9. l Fig.10.

\nvenTor.

Wolfer R. Way

Patented Sept. 6, 1932 Til N TE TS ES WA TERR. WAY, OFIVVQUINGY, MASSACHUSETTS i 'Q O K This invention relates to'improvements'in locks. Moreespecially ithasxtodo with a concealed lock forholding a movable closure in closed position and for moving it to and ,i eifectpositive movement of the closureito' 15 or from its closed position. When closed the.

lock will prevent'dislodgment of the closure,

Another feature'of the improved, lock is its adaptabilityoto closures of varying lengths v. and of difierent'thicknesses vidin a fixed member 'on the wall and a mova le member on" the closure-('or-vice;

versa) both members having co -operating portions entirely concealed'from theouter side of the wall and the movable member hav ing a portion which can'be' manipulated from the said outer side and thereby efiect the cooperative action of the concealed portions. In the preferred'form the'fixedinember is a bracket secured to the inner surface of.

the wall, extending slightlyacross the opening. The movable member comprises arota t able shaft suitably journaled in the closure stantially flush with the outer surface thereof; Attached to the concealed end ofthisishaft is a spiral or helical deformed plate of'con siderably greater diameter than thatof the shaft. lVith the closure placed in the open ing in'nearly "closed position, the movable plate is moved in'directionto cause its de-' formed portion to engage-the fixed member and thereby draw theclosure shut.

Upon movement ofthemovable' member in the opposite direction the closure i'sforced outwardly from the 1 opening sufiiciently to permit it to be easily taken hold of and removed.

Illustrative applications of the principles "Application fil ed December 30,1927. Serial K0 2435539.

- These objects and the features which char-i acterize the invention are attained by prowith its head'or exposed end arranged sub;

of my'invention are shown in the accompany} ing drawings, in which h t Figure 1 is a se tion, in elevation, of awall with opening, a closure therefor and" a lock embodying the present'inventionf; i Figure 2 is an elevation'of the front face [of them i h closure cked shun Figure 3 isan elevation'of the rear faceof the same; i 1 j Figure 4: is a plan view of Figure 2; i 2 80 T Figure 5 is a plan view of the deformed; plate of Figures 1, 3 and 4;

Figure 6 is an elevation, 1n section as on line 66 of Figure 2,'sl1owing the deformed i plate about to engage the fixed member, 017

keeper, to urgethe closure out of thewall' open1ng; Figures 7 and 8; are front elevations of di-f-fv Y ferenttyp'es of'shaft heads Figures 7A and 8A are elevations of keys adapted to fit the heads of Figures 7 and 8 respectively v I Figure 9 is a perspective, partly in section, showing a modified form of shaft and 'cam' plate; r, v vvIt Figure 9A is a front elevation of the head of shaft ofFigure 9; V e

Figure 10 .is a section,fias on line 105-10 7 of Figure 9, through the modification shown a in the. latter :figure; v

F igure- 11 is an elevation of a portionof a Wall and closure illustrating how the loo]; of the invention maybe disguised as a part i of a design;

Figure 12"is a section as on line-12-12 of Figure 11; and

' Figure 13 is an'enlargedfront View of the exposed end of the operatingishafi of the lock of Figure .11.

Referring to the an opening 2 therein and ZLJClOSUIB 3 there for whose outer surface is to the flush. with and a continuation of the walls outer surface. The lock comprises a fixedmember't and arotatable member 15, the former being preferably a bracket secured to the inner'face of the wall and having. a portion ext'ending. from the edge 'ofthe wall part way across.

the'ope'ning. The rotatable member 15 com" Q:

prises a shaft 6"having acylindrical portion drawings the 1 has 6a, of less diameter than the head 6?), extending through the closure and a threaded portion 60 beyond, having one or more flat sides 6a? to receive lock nut 7.

Preferably three of the sides of the opening 2 are perpendicular to the face of the wall, while the upper or top sides 2A is beveled downward somewhat from the front edge. The corresponding side of the closure is similarly beveled. A stop 12 is attached to the inside face of the closure'at the bottom to prevent outward withdrawal, and a similar stop 13 is attached to the inner face of the wall to keep the closure from being pushed inward, or if preferred dowels 1% may be used instead as shown in Figures 3 and 6. I

To place the closure in the opening, its lower side is laid upon the lower side of the opening and its upper side swung toward the wall until the threads of the rotatable member are in position to engage the projecting portion of the fixed member. A suitable handle such as a wrench or key is then applied to the head 6?) and the movable member rotated. As shown in Figure 6 this projecting portion is shaped to be engaged by a helical surface of the movable member 15 as the latter is rotated, thereby to cause the closure to move inward until it rests firmly against the front edge of the bracket which acts as a stop. The handle is removed leaving the closure locked securely in place in the opening, with its front'surface in alignment with the surface of the wall. To remove it, the handle is again applied to the head 6?) and rotated in the opposite direc tion. The projecting portion will then be engaged by the other helical surface of the deformed plate 15, causing the closure to move outward to where it can be conveniently grasped and lifted from the opening.

When the length of the closure is predetermined, it is desirable to have the top edges of'the helical surfaces of 15 follow, as it were, the arc of a circle, represented by line L. drawn about a center 0 located on the front edge of the lower side of the opening.

Referring more particularly to Figures 5 and 6, it may be seen that the helical surfaced deformed plate 15 can conveniently be stamped from sheet stock. It is made approximately circular, with an axial hole 15a having flat sides to engage the flat sides 6d of the shaftfi The edge of this disk is separated from the central portion 15b nearly the whole way round to form a ring portion 150. This is then drawn axially away from the central portion thereby forming the helical cam surfaces. If necessary, the section 15d of the ring which is still integrally joinedto the center portion may also be bent axially in the opposite direction to make atrue helix throughout its entire length. The central portion 15b is clamped between two lock nuts 7 and 7 which can be positioned on the shaft 6a wherever necessary to accommodate the lock to the thickness of the particular closure with which it is employed. In the position illustrated, the helical surface is about to engage the projecting portion of the fixed member 4 to efiect withdrawal of the closure 3 from the wall.

Figures 7 and 8 show shaft heads 6?) having, in one case, notches 66 at opposite points on the edge adapted to receive prongs 16 of a handle 17, shown in Figure 7a. The other shaft head 6?), of Figure 8, shows an irregular slot 18 into which the key 19 of Figure 8a can be inserted. The variation in the shape of this slot 18- prevents the use of a coin or any ordinary key andthus guards" against the manipulation. of the look by an unauthorized individual.

Figure 9 discloses a modified form of lock in which the movable member comprises a cylindrical shaft 20 having a hub 21 secured thereto as by pin 22. This sleeve carries a propeller like thread 23 which is adapted to engage a wall bracket (not shown) in the same manner as previously described. The movable member of this figure is mounted in a frame which comprises a bar 24.. having a sleeve 25 forming a journal for the shaft 20, and a strap 26 which also constitutes a bearing for this shaft. The axial engagement of the hub 21 with the bar 24 and strap 26 prevents longitudinalmovement of the rotatable member when the bar and strap have been secured to the closure 3. The head of the shaft has a single transverse slot 20a into which a handle suchas a screwdriver can be intro- 1elucedto effect rotation of the rotatable mem-- Preferably the lock of this invention has no protuberance above the closure surface itself. If the latter is provided with a raised design for purposes of ornamentation, the head of the lock shaft lends itself readily to such a decorativescheme and can easily be designed to become a part of whatever figure is desired. Figure 11 illustrates such an em; bodiment of the invention with the closure 3' having a raised design 27, comprising rosettes 28 and 28. One of theserosettes (28) con: stitutes the exposed end of shaft 6a on which, interiorly of the closure, is secured the deformed plate 15 by the lock nuts 7 and;7-.- This plate coacts withthe fixed member 4 to.

draw the closure tight upon rotation of the rosette 28 in one direction and thenlocks the closure tightly shut, and pushes the closure away fromthe wall upon the rosette 28 beingrotated in the reverse direction. The closing movement of the closure is arrested both by its contact with a shoulder 1a on the wall as well as by the engagement of the outside molding 29 with the-wall and the engagement of the closure with an inside molding- 30. r

In Figure 12 the deformed plate 15 is somewhat similar to the plate 15 already described, but here a portion of the helix is cut away so that a passageway is provided between the helix ends 15 and 15, through which the other cooperating member can pass to get from one surface of the helix to the other surface.

I claim as my invention:

1. Means for securing a closure movably in a wall opening, comprising an operating shaft adapted to be mounted in and to extend rotatably through one of the Wall elements and be held against axial movement therein; an engaged member adapted to be secured on the other wall element; and an engaging member projecting from the inner partof said shaft, comprising a stiff plate of stamped sheet metal having a marginal portion set oblique to the plane of the closure and positioned with respect to the engaged member so that upon rotation of the shaft it constitutes a cam for movingthe closure; there being a shaft-engaging portion of the sheet metal integral with the said marginal portion and constituting a support on the shaft for said marginal portion in its said oblique position.

2. Means for securing a closure movably in a wall opening, comprisingan operating shaft, adapted to extend rotatably through one of the wall elements and be held against axial movement therein; and a stiff sheet metal plate, having a plane portion with a non-round hole strung on a non-round inner portion supported thereby and set oblique to the plane of the closure, being thereby adapted for rotating with'the shaft and constituting a cam for moving the closure; and means for securing the plate against axial movement on the shaft.

3. Means for securing a closure movably in a wall opening, comprising an operating shaft adapted to extend rotatably through one of the wall elements and be heldlagainst axial movement therein an engaging member projecting from the inner part of said shaft; and a member adapted to be secured on the other wall element; one ofsaid members being of stiff sheet metal stock, having a portion extending helically around its axis, and

having a plane portion constituting a support for said helical portion; the said member on the shaft being positioned so that, upon rotation of the shaft, the helical portion constitutes a cam for moving the closure;

there being an opening between the ends of said helical portion extending both in peripheral and in axial direction, whereby upon rotation either face of said helical portion may engage the secured member as an active cam surface.

4;. Means for securing a closure movably in a wall opening, comprising an operating shaft adapted to be mounted in the closure and to extend rotatably through the closure and be held against axial movement therein; said shaft having its exposed outer end approximately flush with the surface of the closure, and having there means for an operator to rotate it; an engaging and propelling member projecting from the inner part of said shaft; and an engaged member adapted to be secured on said wall to project part way across said opening; one of said members comprising a stiff sheet metal plate set oblique to the plane of the closure the said propelling member on the shaft being positioned so that, upon rotation of the shaft, the oblique plate constitutes a closure-propelling cam.

Signed at Wollaston, Quincy, Mass, this 19th day of December 1927 V WALTER R. WAY. Q

of the shaft, and a marginal portion 

